Telescopic-rammer motor.



No. 805,598. PATENTED NOV. 28, 1905. A. A. THRESHER.

TELBSOOPIO RAMMER MOTOR.

APPLICATION FILED JULY 24. 1905.

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Wwf A CMM: m @444/ M Grammys witnesses No. 805,598. n PATENTED NOV. 28, 1905.

' A. A. THRESHER.

TELESCOPIC RAMMER MOTOR.

APPLICATION FILED JULY24. 1905.

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ALFRED A'. THRESHER, OF DAYTON, OHIO.

TELESCOPlC-RANIMER MOTOR.

Specification of Letters Patent.

Patented Nov. 28, 1905.

Application filed July 24,1905. Serial No. 271,097.

To all whom, t may concern.-

Be it known that l, ALFRED A. THRESHER, of Dayton, in the county of Montgomery and State of Ohio, have invented a certain new and useful Improvement in Telescopic-Rammer Motors 5 and l do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, and to the letters of reference marked thereon.

This invention relates to motors for telescopic rammers, such as set forth in my contemporaneous application, SerialNo. 218,867, which application discloses but has no specific claim for the invention of the present application.

The object of the invention is to provide a compact self-contained structure, the working parts of which while accessible are nevertheless protected against injury and dirt and are so'disposed as to be out of the way of the gun crew.

The invention of the present application consists in certain novel details of construction and combinations and arrangements of the electric-motor mechanism of the rammer.

Referring to the accompanying drawings, Figure l is a side elevation of a rammer embodying the present improvements, but with the telescopic sections omitted. Fig. 2 is a vertical section showing the electric motor and drive-gear, but with the upper portion of the rammer frame and mechanism broken away. Fig. 3 is a top plan view of the rammer as shown in Fig. l.

Like letters of reference in the several figures indicate same parts.

The rammer mechanism proper or the telescopic sections, together with the mechanism directly connected therewith for extending and retracting the same, is similar to that now well known and is substantially as described in my before-mentioned application or in the patent to Fenton, No. 627,404, June 20, 1899, and illustration or description of the same is not necessary further than to say that they are power-driven from the shaft B. This shaft-B, together with all the operating parts and motor, is carried by a mount or frame A, adapted to be located permanently in rear and in line with the gun when the latter is in loading position, Shaft B carries at one end a large drive-gear B', journaled on but connected with the shaft through a friction-clutch C, held up to its work by a spring O', thus permitting the rammer mechanism to come to rest when the resistance is excessive and preventing destruction of the parts due to momentum if sudden resistance is encountered. From the gear B' a chain or link belt D extends back to the small gear D', preferably located directly on the motorshaft E.

The motor is an electric motor which is self-contained and is located in the rammermount directly beneath the telescopic-section chamber and in such a position that its fields and armature are within the mount, while the ends of its shaft project at the sides. Said motor embodies in its construction a center or field ring F with inwardly-projecting poles f, and an external flange F', together with inclosing heads G and G', having bearings for the armature-shaft E. The motor, preferably those portions of the field-ring adjacent the flange F' and head G', is formed to fit openings in the opposite side wall of the rammermount, while the flange F' fits against one of the side walls, as shown clearly in Fig. 2. To retain the motor in place, the flange F' is bolted to the face of one side of the mount by bolts l, and the head G is secured by tiepieces H, secured to the head and mount by bolts l'. The annular flange, it will be seen, positions the motor and serves as an effective brace, and the construction is such that while the field-ring and-one head are rigidly and firmly joined with the mount the opposite head is removable without taking down the entire structure. The motor is of the inclosed type, and as the most convenient construction the removable head is dished outwardly for the accommodation of the commutator K, the shaft-bearing, &c., and said head may be provided with a door or handhole L, through which access may be had to the interior of the motor without the necessity of removing the head itself.

It will be particularly noted that the motor is especially designed to occupy a small space longitudinally of the shaft so as to fit within a comparatively narrow mount or frame, leaving no projections liable to obstruct free passage of the gun crew around the mount and motor.

What l claim isl. A motor for telescopic rammers embodying heads, armature, armature shaft journaled in the heads and a field-ring connecting the heads said ring being of substantially uniform section to enter the rammer- IOO IIO

mount and having an external flange near one end adapted t0 abut against one of the faces ol'l the raininer-franie; substantially as described.

2. The combination with the mount, having openings in its side Walls, of the electric motor formed with exterior configuration to it each of said openings and nieans for securing the motor to the inount substantially as described.

' 3. A rnotor for telescopic ranimers enibodying a iield -ring having an external flange extending around the saine for attachment to the motor-support and a head of less diameter than the ilange whereby the said head may be passed through the opening in ring, one oi said heads being of less dianicterthan the flange whereby said head inay be passed through an opening in the motor-support and through which the lange will not pass; substantially as described.

ALFRED A. THRESHER.

Witnesses:

ALEXANDER S. STEUART, THOMAS DURANT. 

